HPS Dry screw vacuum pumpDetailed product description：

Scope of Application
A dry screw vacuum pump is a pumping device that uses a pair of variable pitch screws to perform synchronous high-speed reverse rotation in the pump casing, generating suction and exhaust effects. The two screws are finely balanced and calibrated, supported by bearings, and installed in the pump casing. There is a certain gap between the screws, so there is no friction between them during pump operation, smooth operation, low noise, and no need for lubricating oil in the working chamber. Therefore, a dry screw pump can pump gases containing a large amount of water vapor and a small amount of dust. Due to the variable pitch structure of the screw, the extracted gas is compressed in the working chamber. Compared with the equal pitch structure, the ultimate vacuum is higher and the power consumption is lower, which has the advantages of energy saving and maintenance free. It is an upgraded product of oil sealed vacuum pump.

Performance Specifications
Main performance parameters

Specification		HPS-P150	HPS-P300	HPS-P400	HPS-P800
Extraction rate 50/60Hz (m/Hr.)		120/150	250/300	330/400	680/800
ultimate vacuum	Torr	0.01/0.0075	0.01/0.075	0.01/0.0075	0.01/0.0075
	Pa	2/1	2/3	2/1	2/1
Power (50/60Hz)		3.7/5.5	7.5/11	11/15	18.5/22
RPM 50/60Hz		2900/3450	2900/3450	2900/3450	2900/3450
caliber	Inlet Diameter	forty	fifty	sixty-five	one hundred
	outlet diameter	forty	forty	fifty	sixty-five
Oil consumption (L)		one point three	one point six	two	four
Water flow rate (L/min)		three	five	seven	ten
Weight (kg)		220kg	320kg	410kg	630kg

Structural diagram of HPS dry screw vacuum pump